Coupling device

Abstract

Clutch device (1), comprising a vibration damping arrangement (2) and at least one partial clutch (3, 4) with a disk pack (9, 14) formed from inner disks (6, 11) assigned to an inner disk carrier (5, 10) and outer disks (8, 13) assigned to an outer disk carrier (7, 12), wherein the vibration damping arrangement (2) is arranged downstream of the disk pack (9, 14) of the at least one partial clutch (3, 4) on the transmission side, wherein the vibration damping arrangement (2) has at least two damping devices (19, 20) connected to one another by means of a connecting element (22), wherein two receiving elements (26, 27) connected to one another are provided, between which one of the at least two damping devices (19, 20) is received and coupled to the receiving elements (26, 27), wherein one of the receiving elements (26, 27) is provided with a Inner disk carrier (5, 10) or outer disk carrier (7, 12) of the at least one partial clutch (3,4), wherein the connecting element (22) is arranged between the two receiving elements (26, 27) and the two receiving elements (26, 27) are connected to one another by means of coupling elements (28), each of which passes through a recess in the connecting element (22).

Description

The invention relates to a clutch device comprising a vibration damping arrangement and at least one partial clutch with a disk pack formed from an inner disk carrier assigned to an inner disk carrier and outer disks assigned to an outer disk carrier.Such coupling devices are sufficiently known from the prior art. These are used, in particular in motor vehicles, to produce a connection between an input side and an output side. For this purpose, the inner disks and the outer disks are brought into frictional engagement with one another, so that the components connected to the inner disk carrier and the components connected to the outer disk carrier can be coupled to one another in a force-fitting manner and can be decoupled again by releasing the frictional engagement.It is also known that rotational irregularities can occur in the drive train, which lead to rotational oscillations which have to be damped. In particular in the course of down-sizing, internal combustion engines with a reduced number of cylinders and / or a reduced cylinder volume are frequently used, wherein rotational irregularities which are given to the drive side, for example an input element, are increased.As prior art, reference is made, for example, to DE 10 2010 051 147 A1 and DE 10 2017 120 065 A1.The invention is therefore based on the object of specifying a clutch device in which oscillations which occur can be better damped.To achieve this object, in a clutch device of the type mentioned at the beginning, it is provided according to the invention that the vibration damping arrangement is connected downstream of the disk set of the at least one partial clutch on the transmission side.The invention is based on the idea of connecting the vibration damping arrangement in the axial direction downstream of the disk set of the clutch device. Accordingly, the vibration damping arrangement is arranged on the transmission side with respect to the plate pack of the clutch device or the plate pack of the at least one partial clutch. This makes it possible to damp oscillations that occur, in particular torsional oscillations in the drive train, and specifically the damping takes place in the axial direction behind the disk set or the disk sets of the clutch device. Furthermore, the embodiment according to the invention offers the advantage that installation space in the radial direction at the clutch input can be saved, since the vibration damping arrangement is arranged in a region which is arranged downstream of the disk pack or the disk packs. As a result, the installation space available on the transmission side in the axial direction can be better utilized and installation space in the region of the clutch input can thus be saved. The clutch device according to the invention can thus be made radially more compact in comparison with conventional clutch devices.According to the invention, it is provided in the coupling device that the vibration damping arrangement has at least two damping devices. This embodiment of the coupling device according to the invention further improves the damping of oscillations which occur. In particular, a specific vibration characteristic can be taken into account or set in this case by the at least two damping devices being designed differently. The at least two damping devices can preferably be arranged parallel or in series. Of course, any combinations of parallel or series connected or arranged damping devices are possible. The damping devices are arranged either on the same radial position or on different radial positions, so that identical or different effective radii are formed. Of course, any desired combination of damping devices arranged on the same effective radius or different effective radii is also possible. The damping devices each have at least one damping element, preferably a plurality of damping elements, for example spring elements, which are arranged distributed in the circumferential direction and which carry out damping of oscillations which occur. For this purpose, two components of the clutch device are coupled to one another via the at least one damping element or the damping device.A further development of the coupling device according to the invention provides that the at least two damping devices are connected to one another by means of a connecting element. According to this embodiment, the at least two damping devices are connected to one another by means of the connecting element or are arranged on the same connecting element. A first damping of oscillations occurring then takes place via the damping device arranged first in the torque flow, wherein a second damping of the oscillations transmitted from the first damping device then takes place by the second damping device. Accordingly, the at least two damping devices can also be referred to or considered as "damping stages" or "damping stages", since the damping of the oscillations that occur is carried out in multiple stages. It can be provided particularly preferably that the at least two damping devices have damping elements which are designed for different oscillations which occur, so that more efficient damping is achieved.The coupling device according to the invention can be further developed to the effect that the connecting element has at least one guide section in which a spring element of one of the damping devices is radially and / or axially guided. The guide section is preferably embodied in one piece with or also separately from the connecting element and connected to the latter. The guide section ensures that the at least one spring element is guided in the axial direction and / or in the radial direction, wherein a relative movement between the connecting element and the component which transmits the torque to the spring element naturally remains ensured. In other words, in the event of oscillations occurring, a deformation of the at least one spring element can occur. The guide section can also be referred to as a "container".According to a further embodiment of the clutch device according to the invention, two receiving elements connected to one another can be provided, between which one of the at least two damping devices is received and coupled to the receiving elements, wherein one of the receiving elements is connected to an inner plate carrier or outer plate carrier of the at least one partial clutch. According to this embodiment of the invention, it is provided that two interconnected receiving elements receive at least one of the two damping devices. The at least one accommodated damping device is accordingly guided over the two accommodation elements in the axial direction and preferably also in the radial direction, so that their radial position is substantially fixed by the two accommodation elements. The at least one damping device is further coupled to the receiving elements, so that a torque introduced into the damping device can be discharged via the receiving elements. One of the two receiving elements or, since the two receiving elements are connected to one another, both receiving elements are connected to an inner plate carrier or outer plate carrier of the at least one partial clutch. The torque introduced into the damping device is then discharged via the receiving elements and transmitted to an inner plate carrier or outer plate carrier of the at least one partial clutch.According to the invention, it is provided that the connecting element is arranged between the two receiving elements and the two receiving elements are connected to one another by means of coupling elements, which each pass through a recess in the connecting element. The torque introduced into the clutch device on the drive side is then transmitted to the connecting element and then conducted to the damping device coupled to the connecting element. As described above, the damping device is arranged between the two receiving elements and is coupled to these in such a way that the torque which has been damped by the damping device is discharged from the damping device via the receiving elements and is transmitted to the inner plate carrier or the outer plate carrier of the partial clutch.In this case, the connecting element preferably engages between the two receiving elements in such a way that it is penetrated by the coupling elements which couple the two receiving elements to one another. The recess in the connecting element must be designed in such a way that a free rotation of the connecting element in a defined angular range relative to the receiving elements is guaranteed, since otherwise a short circuit of the damping device would be present. The recess must then permit a rotation through a rotation angle between receiving elements and connecting element, so that the damping device can act accordingly. Of course, a corresponding recess is provided for each of the coupling elements, wherein a configuration is also possible in which a plurality of coupling elements engage in the same recess.Particularly preferably, in the above-described embodiment, the recess in the connecting element can have at least one stop in such a way that a rotation angle of the damping devices is limited. By means of the stop on the recess, a rotation angle between connecting element and receiving element can be defined, so that a further rotation beyond the rotation angle is not possible. In the maximum rotational position, the at least one coupling element engaging into the recess comes into contact with the stop, for example the edge of the recess. At this maximum angle of rotation between receiving elements and connecting element, there is thus a direct connection between the components in the circumferential direction, as a result of which the damping device is bridged and the spring elements installed therein are protected from overloading. This defines an angular range in which the two damping devices can operate, i.e. a relative movement between the mentioned components is possible. This provides protection for the two damping devices, since these are not subjected to force beyond a defined range of action and cannot be moved relative to one another by greater than the defined angle of rotation. This ensures that damage to the spring elements can be prevented.According to a further preferred embodiment of the coupling device according to the invention, it is provided that the connecting element is radially centered on a projection of one of the receiving elements. Accordingly, it is provided that one of the receiving elements has a protrusion which is formed, for example, on a radially inner section of the receiving element. The connecting element is radially centered on this projection. In addition, the receiving element can be radially and / or axially supported on one of the transmission input shafts by means of the projection.Furthermore, in the clutch device according to the invention, at least one actuating element for actuating the disk set of the at least one partial clutch can be provided, which element reaches through an aperture in the connecting element and in one or both receiving elements. According to this embodiment of the invention, the receiving element also fulfils a positioning or centering function for the at least one actuating element of the coupling device. In this case, the actuating element reaches through the connecting element and at least one of the two receiving elements. It must be ensured that despite the engagement of the actuating element, a corresponding angle of rotation between connecting element and receiving elements must remain ensured, since otherwise, due to a fixed connection between connecting element and receiving elements or a limitation of the angle of rotation due to the engagement of the actuating element, a short circuit would be present between the connecting element and the receiving elements, bridging the two damping devices.Preferably, it is provided that the centering of the actuating elements takes place on the part of the receiving element or the receiving elements. In this case, a correspondingly larger recess, which keeps the angle of rotation free, is to be provided for the actuating elements or the actuating element in the connecting element.For a return of the actuating element or of the two actuating elements, it is particularly preferably provided that a return element, which brings about the return of the actuating element into its starting position, is arranged or supported on one of the receiving elements. For this purpose, the receiving element has a corresponding section on which the restoring element is supported. The restoring element builds up a restoring force counter to the movement of the actuating element, which restoring force subsequently returns the actuating element into its starting position. This restoring force can be supported on the receiving element.The clutch device is particularly preferably designed as a wet-running clutch device, i.e. a working fluid is provided within a region of the clutch device, which region is generally referred to as a wet chamber. According to this embodiment of the clutch device according to the invention, the vibration damping arrangement is operated in the wet chamber.The coupling device according to the invention can be further developed to the effect that a first of the at least two damping devices is arranged on an outer radial position and a second of the at least two damping devices is arranged on an inner radial position, wherein the first damping device has at least one spring element designed as an arc spring and the second damping device has at least one spring element designed in a straight line. The damping device arranged radially outside accordingly has at least one spring element, in particular a plurality of spring elements, designed as an arcuate spring, so that the arcuate spring experiences a particularly large angle of rotation on the radially outer radial position and can thus make particularly effective use of its range of action. The spring element arranged on the inner radial position is, in contrast, designed as a straight spring element and experiences the oscillations already damped by the bow spring, so that only a smaller angle of rotation is required there. Accordingly, the spring elements of the two damping devices can be matched to one another, so that particularly efficient damping of the vibration spectrum is possible. Torsional vibrations which occur can thereby be damped particularly effectively.Of course, the spring elements of the damping devices of the clutch device according to the invention can have different, in particular multi-stage, spring characteristic curves, so that optimum adaptation to the oscillations to be expected is possible. The spring elements can be designed almost as desired, in particular using inner springs and outer springs encompassing them.In addition, the invention relates to a clutch device having at least one partial clutch, wherein at least one vibration damping arrangement having two damping devices is provided, which is arranged in the wet space of the clutch device.The invention is explained below on the basis of an exemplary embodiment with reference to the drawing. The drawing is a schematic representation showing a clutch device according to the invention.FIG. 1 shows a clutch device 1, comprising a vibration damping arrangement 2, a first partial clutch 3 and a second partial clutch 4. the first partial clutch 3 has a disk pack 9 formed from an inner disk carrier 5 assigned to an inner disk plate 6 and outer disks 8 assigned to an outer disk plate carrier 7. The second partial clutch 4 is of substantially analogous construction, it has an inner plate carrier 10 with associated inner plates 11 and an outer plate carrier 12 with associated outer plates 13, wherein the inner plates 11 and the outer plates 13 form a plate pack 14.It can be seen that the damping device 2 is arranged downstream of the disk groups 9, 14 on the transmission side. A torque introduced into the clutch device 1 from a drive side 15 is transmitted via a drive element 16 to the vibration damping arrangement 2. By means of the subsequent connection of the vibration damping arrangement 2 and thus the arrangement of the vibration damping arrangement 2 on the transmission side in the axial direction with respect to the plate assemblies 9, 14, installation space can be saved in the region of the clutch input of the clutch device 1. A clutch housing 17 can therefore be formed in a radially outer region 18 in a beveled manner, so that installation space can be saved in the radial direction.The vibration damping arrangement 2 has two damping devices 19, 20 which are clearly arranged at different radial positions with respect to an axis of rotation 21 of the coupling device 1. The two vibration damping devices 19, 20 are thus arranged on different effective radii. The two damping devices 19, 20 are coupled to one another by a common connecting element 22 and are therefore connected in series. In this case, the first damping device 19 is coupled to the drive element 16 and the connecting element 22. The damping device 19 couples the drive element 16 to the connecting element 22 by means of a spring element 23, The spring element 23 is designed as an arc spring in this exemplary embodiment and is guided in the axial direction and the radial direction in a guide section 24 of the connecting element 22. The guide portion 24 can also be referred to as a "container". Of course, in this exemplary embodiment, a plurality of spring elements 23 are provided distributed in the circumferential direction.In this exemplary embodiment, the second damping device 20 likewise has a plurality of spring elements 25, which are designed as straight spring elements. The spring elements 25 are accommodated by two accommodation elements 26, 27, between which the spring elements 25 are arranged. On the receiving elements 26, 27 and the connecting element 22, corresponding means are of course arranged, which engage in the spring elements 25. The two receiving elements 26, 27 are connected to one another by means of coupling elements 28 and transmit a torque introduced into the spring elements 25 to the outer disk carriers 7, 9 of the two partial clutches 3, 4. For this purpose, the receiving element 26 is connected to the two outer disk carriers 7, 9 in a rotationally fixed manner. The receiving element 26 further has a protrusion 29 which is supported in the axial direction and in the radial direction on a transmission input shaft 30 connected to the inner disk carrier 10. Furthermore, the connecting element 22 is radially centered on the projection 29.The coupling elements 28 pass through recesses in the connecting element 22, which recesses have a stop (not shown) which defines a rotation angle between the connecting element 22 and the receiving elements 26, 27. As a result, the spring elements 23, 25 of the damping devices 19, 20 are protected from overloading.A torque introduced via the drive element 16 is then damped by the first damping device 19, wherein the torque from the damping device 19 is transmitted to the connecting element 22 and is subsequently damped again by the second damping device 20, preferably in a manner matched to a different vibration spectrum. The torque introduced into the second damping device 20 via the connecting element 22 is then, damped, transmitted to the receiving elements 26, 27 and via these to the two outer disk carriers 7, 9 of the partial clutches 3, 4. Subsequently, the torque can be transmitted to the corresponding transmission input shaft via the corresponding frictional engagement of the disk groups 9, 14.The connecting element 26, which couples the two outer plate carriers 7, 12 to one another, has a further protrusion at its end opposite the protrusion 29, with which the receiving element 26 engages around the outer plate carrier 7. The two outer disk carriers 7, 12 in turn have a protrusion, by means of which it is ensured that a force introduced into the disk groups 9, 14, which force is transmitted by means of the actuating elements 31 to the disk groups 9, 14, is supported on the receiving elements 26.Furthermore, the connecting element 22 and the receiving elements 26, 27 have recesses through which the actuating elements 31 can pass. The actuating element 26 can have a plurality of centering stops in the recesses for the two actuating elements 31. The recesses in the connecting element 22 are to be selected in such a way that the full angle of rotation, which is defined for the coupling elements 28 via the stops in the recesses in the connecting element 22, can be utilized.List of reference characters1 Clutch device 2 Vibration damping arrangement 3 Partial clutch 4 Partial clutch 5 Inner plate carrier 6 Inner plate 7 Outer plate carrier 8 Outer plate 9 Plate pack 10 Inner plate carrier 11 Inner plate 12 Outer plate carrier 13 Outer plate 14 Plate pack 15 Drive side 16 Drive element 17 Clutch housing 18 Region 19 Damping device 20 Damping device 21 Rotational axis 22 Connecting element 23 Spring element 24 Guide portion 25 Spring element 26 Receiving element 27 Receiving element 28 Coupling element 29 Projection 30 Transmission input shaft 31 Actuating element

Claims

Clutch device (1) comprising a vibration damping arrangement (2) and at least one partial clutch (3, 4) with a plate pack (9, 14) formed from an inner plate (6, 11) assigned to an inner plate carrier (5, 10) and outer plates (8, 13) assigned to an outer plate carrier (7, 12), wherein the vibration damping arrangement (2) is arranged downstream of the plate pack (9, 14) of the at least one partial clutch (3, 4) on the transmission side, wherein the vibration damping arrangement (2) has at least two damping devices (19, 20) connected to one another by means of a connecting element (22), wherein two receiving elements (26, 27) connected to one another are provided, wherein one of the at least two damping devices (19, 20) is received between these receiving elements and coupled to the receiving elements (26, 27), wherein one of the receiving elements (26, 27) is connected to an inner plate carrier (5, 10) or outer plate carrier (7, 12) of the at least one partial clutch (3, 4), wherein the connecting element (22) is arranged between the two receiving elements (26, 27) and the two receiving elements (26, 27) are connected to one another by means of coupling elements (28), which each pass through a recess in the connecting element (22).Clutch device (1) comprising a vibration damping arrangement (2) and at least one partial clutch (3, 4) with a plate pack (9, 14) formed from an inner plate (6, 11) assigned to an inner plate carrier (5, 10) and outer plates (8, 13) assigned to an outer plate carrier (7, 12), wherein the vibration damping arrangement (2) is arranged downstream of the plate pack (9, 14) of the at least one partial clutch (3, 4) on the transmission side, wherein the vibration damping arrangement (2) has at least two damping devices (19, 20) connected to one another by means of a connecting element (22), wherein two receiving elements (26, 27) connected to one another are provided, wherein one of the at least two damping devices (19, 20) is received between these receiving elements and coupled to the receiving elements (26, 27), wherein one of the receiving elements (26, 27) is connected to an inner plate carrier (5, 10) or outer plate carrier (7, 12) of the at least one partial clutch (3, 4), wherein at least one actuating element is provided for actuating the disk pack (9, 14) of the at least one partial clutch (3, 4) which passes through an aperture in the connecting element (22) and in one or both receiving elements (26, 27).Clutch device according to Claim 1 or 2, characterized in that the at least two damping devices (19, 20) are arranged parallel or in series.Coupling device according to claim 3, characterised in that the connecting element (22) has at least one guide section (24), in which a spring element (23, 25) of one of the damping devices (19, 20) is guided radially and / or axially.Coupling device according to one of the preceding claims, characterized in that the recesses have at least one stop in such a way that an angle of rotation of the damping devices (19, 20) is limited.Coupling device according to one of the preceding claims, characterized in that the connecting element (22) is radially centred on a projection (29) of one of the receiving elements (26, 27).

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